part ofhas developmental contribution frommesenchymemesencephalic neural crestperiocular mesenchymeCheck XAO once it has a definition.Periocular mesenchyme (PM) is a mesencephalic neural crest derived cell population which as a result of an interaction with the retinal pigment epithelium forms the scleral cartilage of the avian eyeThe mesenchymal cells that give rise to the corneal endothelium, corneal stroma, sclera, iris stroma, ciliary muscle, ciliary stroma, and trabecular meshwork of the eye[MP].UBERON:0004017XAO:0004089ZFA:0005572periocular mesenchymeuberonectoderm-derived structureimmature eyestructure with developmental contribution from neural crest